Function centroidLinePoint

docs/app/js/sanddance-app.js:132325–132333

(lambda, phi)

    centroidPointCartesian(x0, y0, z0);
}
function centroidLinePoint(lambda, phi) {
    lambda *= (0, _mathJs.radians), phi *= (0, _mathJs.radians);
    var cosPhi = (0, _mathJs.cos)(phi), x = cosPhi * (0, _mathJs.cos)(lambda), y = cosPhi * (0, _mathJs.sin)(lambda), z = (0, _mathJs.sin)(phi), w = (0, _mathJs.atan2)((0, _mathJs.sqrt)((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
    W1 += w;
    X1 += w * (x0 + (x0 = x));
    Y1 += w * (y0 + (y0 = y));
    Z1 += w * (z0 + (z0 = z));
    centroidPointCartesian(x0, y0, z0);
}
function centroidLineEnd() {
    centroidStream.point = centroidPoint;
}